MassLogger | Threat Level: medium | Type: Infostealer

Cryptographic Identifiers

SHA256490a1129bc3a754001293f653954bd2a76f2dd5b847fd57a38fe553bcb9f56eb
MD533133b3949ddef935dadcf44a1f6c99a
File Typegz
Size741.4 KB
First Seen2026-05-05
File NameDB54NXQP1.gz
Tagsgz, MassLogger

Malware Family: MassLogger

MassLogger, email tabanlı keylogger'dır.

TypeInfostealer
Programming LanguageC#/.NET
Target PlatformWindows
C2 ProtocolSMTP/FTP
PurposeEmail keylogger
First Seen Year2020

Threat Indicators (IOC)

  • SHA256: 490a1129bc3a754001293f653954bd2a76f2dd5b847fd57a38fe553bcb9f56eb
  • MD5: 33133b3949ddef935dadcf44a1f6c99a

You can verify all hash values of this sample on VirusTotal.

System Cleanup Guide

  1. Disconnect the system from the network immediately
  2. Yeni bir cihazdan banka hesabı, sosyal medya ve e-posta şifrelerini değiştirin
  3. Move crypto wallets to a new address and abandon the old ones
  4. Start a full scan with up-to-date antivirus
  5. Clear saved browser passwords and enable 2FA
  6. Sign out of all sessions on every affected service

YARA Rule Hints

rule MassLogger_SHA256 {
    meta:
        description = "MassLogger sample: 490a1129bc3a7540"
        threat_level = "medium"
        first_seen = "2026-05-05"
    condition:
        hash.sha256(0, filesize) == "490a1129bc3a754001293f653954bd2a76f2dd5b847fd57a38fe553bcb9f56eb"
}

MassLogger — Malware Profile

MassLogger credential stealer. PT2600000043.js Portekiz fatura lurü. CommonJS obfuscation. dispatch configuration data.

Malware Type
Infostealer
Programming Language
C#/.NET
C2 Protocol
SMTP/FTP
Target Systems
Windows

Capabilities & Behavior

Tarayıcı Kimlik Bilgileri
Çerez Hırsızlığı
Kripto Cüzdan Çalma
Sistem Bilgisi
Ekran Görüntüsü
FTP/SSH İstemci Şifreleri
E-posta İstemcisi Çalma
Veri Sızıntısı

IOC List (2 indicators)

IOC — MassLogger
# SHA256 490a1129bc3a754001293f653954bd2a76f2dd5b847fd57a38fe553bcb9f56eb # MD5 33133b3949ddef935dadcf44a1f6c99a
TypeValueNote
sha256 490a1129bc3a754001293f653954bd2a76f2dd5b847fd57a38fe553bcb9f56eb Sample:MassLogger
md5 33133b3949ddef935dadcf44a1f6c99a Sample:MassLogger
Tags
massloggerinfostealermalwaremediumsha256hash-analizi